Here's a really old post in which I talk a bit about the MAFT Pro:
http://www.toyota-supra.info/forums/...-oil-flow.html
To put it simply, the MAFT Pro is an air flow meter translator which will allow you to use pretty much ANY air flow meter on your vehicle. It also allows you to completely eliminate any restriction posed by an air flow meter by running what is known as a speed/density setup where the MAFT Pro *calculates* the amount of air through the readings of a small GM temp sensor in the intake piping and a reading from a vacuum line. That's right you can run straight pipe from the air filter all the way to the throttle body.
The MAFT Pro is also a fuel controller (like the SAFC II), a boost controller AND a timing controller... it's a one-stop-shop.
Add a wideband O2 controller and sensor such as the LC-1 by Innovate motorsports and you've not only got mobile and DIY tuning capabilities but you can also set up the MAFT Pro to adjust for and maintain your desired AFRs at: cruise, lean cruise, WOT and idle.
Over the past few years support has grown immensely (for the 7M-GTE... for the 7M-GE, I'm it.
). The firmware is upgradable and free and you can use a couple different programs for data logging (the program TunerPro is the most popular choice; it's shareware and a copy of the installer comes on CD with the Pro).
The Pro is a VERY versatile piece of hardware and IMO it fits right in between all other piggybacks and standalone EMSs... it bridges what used to be a chasm of a gap.
It is NOT an easy system for most to learn and get tweaked just right quickly (at least not with S/D setups) as every engine is different and there is so much control available.
In order to make use of the boost control capabilities you have to be running a S/D setup. To make use of the timing monitor feature (not related to the timing control feature) you must not be using the MAF signal input wiring.
Tip in and tip out refer to how much and how fast the fuel map is enriched and how quickly that enrichment is stopped as you lean into the throttle and as you let off the throttle. Enrichment refers to fuel added in addition to what the tuned map calls for; this is used in cases where there is a surge as the throttle is initially opened and an unexpected drop in air flow such as in the case of a BOV discharging. S/D setups require a lot of tweaking in the real of tip in controls, no adjustment is needed for tip out though as the Pro reads the amount of air after the throttle body. With an S/D setup you could run with a giant, gaping hole in the intercooler and still drive the car home... on a stock system, you're stranded.
S/D setups can be tricky to setup as the computer is calculating the airflow and not quite measuring it as is the case with any other type of meter. Installing a large GM MAF (for example) is a simple enough affair as the Pro simply translates the reading the MAF sends it... no real need to hassle with tip in adjustments unless you're tuning for perfection. Unfortunately, when running in "Translation Mode" the MAFT Pro cannot be used as a boost controller and if used with a MAF it cannot be used to monitor ignition timing advance.
This is not a cheap system, has a steep enough learning curve to scare away some people, has a decent support base, offers most of the functionality previously only available with a standalone. The other nice thing is having all of your piggybacks in one box and reading in the same data logging application.
There's also been talk of adding launch control and knock monitoring, but I don't know where that's at right now... might happen, might not.